I have problem in accessing nested cell array. How could it be done?

I have hierarchy of cell data. how can i access each cell a1, a2 so on and can i use these data as type double?

Please Help...

Answer 1

[Guillaume]

Is this what you're asking?

data = {{1 2 3;4 5 6} {7 8 9;10 11 12}} %for example
b1 = data{1}{2, 1};